com32: add proper sleep()/msleep() functions and make Lua use them

Add proper sleep() and msleep() functions, which among other things
call syslinux_idle(), and make Lua use them.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

1 files changed, 22 insertions, 0 deletions

diff --git a/com32/lib/sys/sleep.c b/com32/lib/sys/sleep.c
new file mode 100644
index 00000000..8a51c1c0
--- /dev/null
+++ b/com32/lib/sys/sleep.c
@@ -0,0 +1,22 @@
+/*
+ * sys/sleep.c
+ */
+
+#include <unistd.h>
+#include <sys/times.h>
+#include <syslinux/idle.h>
+
+unsigned int msleep(unsigned int msec)
+{
+    clock_t start = times(NULL);
+
+    while (times(NULL) - start < msec)
+	syslinux_idle();
+
+    return 0;
+}
+
+unsigned int sleep(unsigned int seconds)
+{
+    return msleep(seconds * 1000);
+}